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Jennie

Gas Engineer
Sep 21, 2011
283
45
28
Hi all,
I'm due to change my first plate on a Worcester Greenstar next week (not looking forward to it).
I found this on Youtube. Is it really as easy as this guy says? And what about checking/replacing the O-rings?
Any tips most welcome.
Thanks
Jennie
 
Last edited:
Does the pipes go up the back of the boiler ?
Oh my goodness - they do. That video will never work then. I'll have to start taking parts out to get to it from the front. I might just enlist a more experienced engineer to come with me. Thanks for pointing that out to me. 🙂
 
Left hand hydro block out and bypass tube you will be fine

Replace the left hand as it gives you all the washers

Worst case you remove the whole hydro assembly eg the two transparent plastic clips, expansion vessel flex out of pump block and guage, slide the prv slider down and undo all the jig nuts and the whole lot will come out

87161072240
 
We do quite a lot of work on these and I always find it easier to just drain and remove the whole hydraulic flow and return sections in one. If it's over 7/8 years I always advise customer to replace plastic flow block, dhw restrictor and prv, cost £60 ish but massive saving in the future. Just take your time undoing everything and cover board etc with a towel.
 

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